| Abstrakt: |
This paper mainly introduces the pretreatment of waste lithium battery and the research situation of related processes of recycling valuable metals, analyzes the main processes, principles, advantages and disadvantages of pyrometallurgy, hydrometallurgy, united pyro-roasting & hydrometallurgy and biometallurgy, and prospects the recycling industry of spent lithium battery. Pyrometallurgy has strong adaptibility for raw materials and large processing capacity, which can make full use of the reduction and energy contained in spent lithium batteries. Hydrometallurgy is easy to achieve high metal leaching rate, and the use of reagents such as H3PO4 or ammonia can achieve preferential extraction of individual metals. Biometallurgy has certain challenges in the application of waste lithium batteries, mainly because waste lithium batteries contain toxic electrolytes, which seriously affect microbial activity. The united pyro-roasting and hydrometallurgy combines the advantages of pyrometallurgy and hydrometallurgy, and can extract the advantages of individual metals, which has potential application in future. [ABSTRACT FROM AUTHOR] |
